Arnold Johnson (March 23, 1893 – July 15, 1975) was a prominent American big band pianist, arranger, composer, and bandleader during the swing jazz era. Born in Chicago, Illinois, Johnson began his musical career early, working as a pianist in a Chinese restaurant at the age of fourteen and later as an accompanist for vaudeville revues. He pursued formal music education at the Chicago College of Music and the American Conservatory of Music.

In the early 1920s, Johnson moved to New York and joined Rudy Wiedoeft's Frisco Jass Band as a pianist. Around this time, he also briefly ventured into real estate. By the mid-1920s, Johnson had formed his own band, which recorded for Brunswick Records and Vocalion Records. His band included notable musicians such as Freddy Martin, Harold Arlen, Vic Berton, Bob Chester, and Danny Polo. They performed in several Broadway musicals, including "George White Scandals," "Greenwich Village Follies," and "Earl Carroll's Sketchbook" during 1928-1929, and were regulars in dance halls across New York and Chicago.

Johnson's band was featured on the CBS radio network's "The Majestic Theater of the Air" starting in 1929. In the early 1930s, he disbanded his group and shifted his focus to the broadcasting industry, working as a director and producer of radio programs like "National Amateur Night." Arnold Johnson passed away in St. Petersburg, Florida, leaving behind a legacy as a significant figure in the swing jazz era.